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A) \[1\times {{10}^{8}}\,m/s\]
B) \[2\times {{10}^{8}}\,m/s\]
C) \[3\times {{10}^{8}}\,m/s\]
D) \[4\times {{10}^{8}}\,m/s\]
E) None of these
Correct Answer: B
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